Load a minimal first bundle (menu/first level assets only), defer everything else behind a loading or progress screen, use compressed texture and audio formats, and stream remaining assets in the background while the player is already interacting with the game.
At a glance
| Fact | Value | Source |
|---|---|---|
| Recommended fix for large initial download | progressive loading | developer.mozilla.org |
| Compact 3D delivery format | glTF (.glb) | khronos.org |
Split assets into what the first screen needs and everything else, and only load the first group before showing play. Queue the rest behind a loader that runs after gameplay starts, not before it. Players tend to leave if loading takes too long, so keep the initial download small with progressive loading rather than one big upfront fetch.
If you are building your game with an AI coding agent, the Playgama MCP server lets the agent upload builds, test them in a sandbox, and manage developer cabinet settings directly from environments like Claude Code or Cursor.
What actually cuts the initial payload
- Use a loader that queues assets and loads them as a batch rather than one-by-one requests scattered through startup code – Phaser’s Loader and PixiJS’s
Assets.load()both work this way, resolving once everything in the queue is ready. - Compress textures (KTX2/Basis in three.js) and 3D models (glTF binary .glb, optionally with Draco mesh compression) instead of shipping raw PNGs and uncompressed meshes.
- Concatenate small sound effects into one larger audio sprite file instead of many tiny files, per MDN’s audio guidance for web games.
- Do not try to autoplay audio or preload large audio buffers before a user gesture – many browsers block this, especially on mobile.
- On portals that iframe your game, the same build runs under someone else’s page chrome, so keep your own loading screen minimal and defer anything not needed for the first interactive frame.
Check load time on a throttled mobile connection, not just your dev machine, before submitting to any portal.
Sources
- Assets | PixiJS
- Loader | Phaser Help
- Requirements | Poki Documentation
- glTF – Runtime 3D Asset Delivery
- KTX2Loader – Three.js Docs
- Audio for Web games – MDN
- Playgama Bridge SDK getting started
Related questions
Should I preload all game assets before showing the first screen?
No. Load only what the opening menu or first level needs, show play quickly, then stream remaining levels, audio and textures in the background.
Does texture compression actually reduce load time?
Yes – formats like KTX2/Basis and glTF binary models are smaller to download and faster to decode than raw PNGs or uncompressed meshes.
Why does my game’s audio not play on first load?
Many browsers block autoplay and may disable buffering before a user gesture, especially on mobile, so trigger audio loading after a click or tap.
Last updated: 01 October 2026